Sydney's Best Home Builders - Excellence in Building


Olsen Construction has been based on Sydney's North Shore for over 20 years and in Newcastle prior. Our family business prides itself on keeping things simple and transparent. We set a high standard and trust our expert team to deliver quality renovation, additions, and extensions.


We are committed, honest and professional craftsmen in every project. Our standard practice includes building structures that will last well through the next generations, high-quality workmanship and finishing the project in a timely manner. On top of this, our skilled team will guide you through the project with great service and provide recommendations and support at every selection and stage of construction.


Successful project completion is a satisfied and content client.

In our 30+ years of business, over 80% of our clients have been generated through referrals from satisfied customers.

"ML Olsen Construction did major renovation/extension work for me, which included extension of two rooms, plus a new bathroom and a concrete deck. Mel had been recommended to me by friends and I had seen the work he was capable of.  I probably could have had the work done for less by some other contractors, but I haven't regretted a cent I spent.


In addition to excellent planning, organisation and craftsmanship by him and his team, I am eternally grateful for the extra advice, suggestions and help I got from him. Some of the small tips he gave me made life much more comfortable.


All the work was done efficiently and faster than I had expected.  His team was trustworthy and pleasant to have around."

Julia | Artarmon

Architectural Plan

Mel Olsen

Owner & Founder


Mel started the business over 30 years ago; Mel is an experienced and talented builder and designer and will be your main point of contact.



Jonathan Olsen

Construction Manager


Jonathan has been with Olsen's for 14 years, starting as an apprentice and now will run your project and the team on-site.

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Glenda Jenkins

Project Co-ordinator

Glenda is our powerhouse. She makes sure our team, suppliers, and contractors are booked on time and to schedule.


Celestina Saavedra-Lacombe

Design Consultant


Celestina is our colour, styling and finishs expert; she will supply and much or as little design and selection support as much as you need to make your dream home a reality.


Our Team

Our skilled team makes your project a reality, many of the team have been with us from apprentices to carpenters and are now helping train the new apprentices.


We look after our team so you get the best outcome for your project.


Our History

In the 1880s the Great Great Grandfather of the Olsen family emigrated from Norway to New Zealand, where he and the family established a sheep farm. Our large Scandinavian family has since scattered across Australasia building business and creating homes. It is this hard-working, entrepreneurial heritage that we bring to our work every day.


Company director and founder Mel Olsen incorporated M L Olsen Construction Pty Ltd. 


Olsen Construction moved to the Upper North Shore.


Mels' eldest son, Jonathan, joined the company as an apprentice carpenter and is now a certified builder and construction manager within the business. 


Mel's youngest, Alejandro joined the team as an apprentice carpenter and this same year the office moved to Peats Ferry Road, Hornsby.


Olsen Construction remains family focused with Mel’s sister Glenda as PA and contract coordinator. Along with our trusted foremen Charlie, Chris and Simon, their excellent teams and our skilled & trusted contractors, we consistently deliver high quality, efficiently managed projects.


Over the last 30+ years, we have designed and built many new homes and completed hundreds of successful additions and renovations to homes across the North Shore of Sydney.